505586139 has 4 divisors (see below), whose sum is σ = 674114856. Its totient is φ = 337057424.

The previous prime is 505586113. The next prime is 505586197. The reversal of 505586139 is 931685505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505586139 - 2¹² = 505582043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505586139.

It is not an unprimeable number, because it can be changed into a prime (505586339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84264354 + ... + 84264359.

It is an arithmetic number, because the mean of its divisors is an integer number (168528714).

Almost surely, 2^505586139 is an apocalyptic number.

505586139 is a deficient number, since it is larger than the sum of its proper divisors (168528717).

505586139 is a wasteful number, since it uses less digits than its factorization.

505586139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168528716.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 505586139 is about 22485.2426938203. The cubic root of 505586139 is about 796.6454003843.

The spelling of 505586139 in words is "five hundred five million, five hundred eighty-six thousand, one hundred thirty-nine".